ASOIAF / Game of Thrones (SPOILERS INSIDE)

[Slave]

Oberyn Martell poisoned Tywin Lannister when he met him for a snack in his solar. Around this time, he tells Tyrion, "everyone dies, the old man won't be around forever," or something to that effect. Tywin's corpse was stinking and he was shitting his guts out just before he died, the effects of which are tied to a certain poison.

At some point, the Brotherhood Without Banners pays a dwarf witch with Tom's song for her visions. She sees A TON OF STUFF, including a Faceless Man meeting Balon on the rope bridge between towers. This vision sequence, along with Dany's in the House of the Undying, forms the basis for a lot of the conclusions that have been drawn on the series.

Varys is either a Targaryen or a wizard or both, I am absolutely convinced. His strange powers of information and disguise, his actual prior experience with sorcery, which left him radically changed - physically, intellectually, and emotionally. The strange gleam in his eye and his un-Varys like directness in the telling of the story to Tyrion... these are the kinds of things that add up in GRRM's world.

We know that Varys came from the East, another possible indicator of his Targaryen heritage. "Beware of the eunuch. He knows things that he should not." -Ned

Illyrio actually calls him a magician under the Red Keep near the dragon bones when Arya overhears them.

Anyway, nothing else that Varys has revealed has convinced me that it would cause him to support the Targaryens. The other story that he wove for Tyrion, that he found his place in the world at court, etc, it doesn't ring true whatsoever, does it? The real take-away from Varys is that he was gelded in an arcane ceremony that he undoubtedly remembers extremely vividly. "I will never forget that voice..." I think it's a very easy intuitive leap from there, to wizard.